Window.



InvenTor I P 1/ I I H. J. DAVISON. WINDOW.

APPLICATION FILED MAB..19,1909.

3 SHBETB- T 1.

H. J. DAVISON.

WINDOW.

APPLICATION FILED MAR.19, 19 09.

' Patented Oct. 19, 1909.-

v a sums-sum a )3, J -El 7 y k zl I 3. I j 5 Witnesses, I lnvepror MMV7244 Afiorngs' HENRY JOCELYN DAVISON, OF MOOBFIELD, ENGLAND.

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Specification of Letters Patent. Patented Oct. 19, 1909.

Application filed March 19, 1909. Serial No. 484,465.

To all whom it may concern:

Be it known that I, HENRY JocnLYN DAVISON, postcaptain, R. N., a subjectof the King of Great Britain, residing at Moon field,Bexhill-on-the-Sea, in the county of Sussex, England, have invented newand useful Improvements in and Relating to Windows, of which thefollowing is a specification.

This invention relates to windows of the known type in which two sashesare hinged together and mounted in a single frame, the hinge line beingeither vertical or horizontal, and the ends of the sashes opposite tothe hinge line being arranged to slide in the frame during the openingor adjusting of the window, so that the two sashes fold together outwardand the central hinge line is only within the frame when the window isclosed.

It is the object of this invention to provide such windows with improvedlocking means for holding the sashes in any required position.

The invention is illustrated in the accompanying drawings in whichFigure 1 shows an elevation, partly in section on the line AB of Fig. 2,and partly broken away, of one sash and the locking device in connectiontherewith. Fig. 2 shows a plan view, in section, of part of the frameand one sash, Figs. 3 and 4 are detail views of parts of the deviceshown in Figs. 1 and 2, Figs. 5 and 6 are detail Views showing amodified form of this device.

In the construction shown in Figs. 1 to 4, the window is of the type inwhich the sashes slide horizontally; each sash a hasa sliding block b ofsuitable form, with or without anti-friction devices such as rollers,pivotally attached at its upper sliding corner, and adapted to work in achannel piece 0 extending along the top member of the frame. At

' the bottom sliding corner of the sash is a suitable anti-frictionsupport such as a large ball and socket bearing 03, which works on ametallic bottom plate e in the frame. Attached to the end of the sashclose to this support is a plate f formed as a hinge for mounted inthem, said bar being extended beyond the support at one end and providedwith a suitable handle (not shown) for turning it. The two bars 70 and Zare held against separation at intervals in their length by clasps orshoes 29 which engage over both bars as shown. These clasps may beflexible enough to allow the bars to spring apart somewhat, but theymust resist such separation with considerable force.

Vith this device it will be seen that when the bar 0 is in the positionshown in the drawings, it leaves the head piece it of each sashattachment free to move longitudinally along the frame so that thesashes can be adjusted to any desired position. When the bar 0 is turnedthrough a quarter revolution its wider parts will press on the one handagainst the head pieces h, and on the other hand against the back bar70. The back bar 0 thus locks the head pieces firmly against the frontbar Z and prevents the sashes from moving until the handle is turnedagain to return the bar to the position shown. The bar m serves as aguide for the lower parts of the head pieces h and prevents said headpieces from tilting outward. In long windows also itis preferable toarrange the handle which turns the bar 0 at or near the center of thebar to avoid undue twisting of the latter in use. This modification isillustrated in Figs. 5 and 6 wherein the handle g is fixed upon orformed integral with the bar, and extends inwardly through a slot in thebox i. The bar is then in two parts with a clasp p at each side of thepoint of separation; it will thus be seen that no obstruction is offeredto the movement of the head pieces it past the central line of thewindow, while adequate locking can be offected in all positions.

What I claim is 1. In a window the combination of two sashes and meanshinging them together, a window frame with guiding grooves at the topand bottom thereof, sliding pieces pivotally attached to the sashes neartheir free ends and working in one of the grooves, a bar of cam sectionextending across the window frame and rotatable on its axis, a back baradjacent to said bar of cam section, and so arranged that rotation ofthe bar of cam section presses said sliding pieces into lookingengagement with the frame.

2. In a window the combination of two sashes and means hinging themtogether, a

pieces into locking engagement with the 'tWo subscribing Witnesses.

and one of the bars beside it, so that rotation of the cam section barpresses said sliding bar beside them.

In testimony whereof I have signed my name to this specification in thepresence of HENRY JOCELYN DAVISON. Witnesses: 1

f LEONARD EDMUND HAYES, I H. D. JAMEsoN.

